body{
    font-family: Arial,"Lucida Grande","Microsoft Yahei","Hiragino Sans GB","Hiragino Sans GB W3",SimSun,"PingFang SC",STHeiti;
}
.header{
    width: 100%;
    height: 68px;
    background-color: #ffffff;
    display: flex;
    justify-content: center;
}
.header .head-wrap{
    height: 68px;
    width: 1200px;
    /* border: 1px solid red; */
    display: flex;
    align-items: center;
    /* justify-content: space-between; */
}
.head-logo{
    width: 136px;
    height: 39px;
    padding: 16px 0 13px;
}
.head-wrap .head-logo a{
    display: block;
    height: 39px;
    font-size: 16px;
    background: url('../img/ia_100000059.png') no-repeat 0 0;
}
.head-wrap::after{
    flex-grow: 1;
}
.head-nav{
    display: flex;
    float: left;
    color: #333333;
    padding: 0 10px 0 25px;
    line-height: 68px;
}
.head-nav li a{
    display: inline-block;
    padding: 0 16px;
    cursor: pointer;
    /* overflow: hidden; */
}
.head-nav li{
    flex-grow: 1;
    /* padding: 0 16px; */
    float: left;
}

.head-nav li:not(:first-child) a:hover{
    color: #ff9d00;
    height: 65px;
    border-bottom: 3px solid #ff9d00;
}
.head-nav .active{
    background-color: #ff9d00;
}
.head-nav a{
    color: #333333;
    font-size: 16px;
}
.head-nav .active a{
    color: #FFFFFF;
}
.cent-logo{
    /* 这里定位有点疑问 */
    /* position: relative; */
    width: 107px;
    height: 68px;
    cursor: pointer;
    background: url('../img/ia_100000055.png') no-repeat center;
    background-size: 75px;
}
.cent-logo a{
    display:inline-block;
    width: 107px;
    height: 68px;
}
.cent-logo a:hover{
    color: #ff9d00;
    height: 63px;
    border-bottom: 3px solid #ff9d00
}
.login-out{
    width: auto;
    padding: 21px 0;
    height: 26px;
    line-height: 26px;
    color: #c9c9c9;
    display: flex;
    /* text-align: right; */
    /* align-self: flex-end; */
    margin-left: 104px;
}
.weibo-login{
    display: inline-block;
    width: 26px;
    height: 26px;
    margin-right: 6px;
    background: url('../img/ia_100000128.png') no-repeat 0 -50px;
}
.login-out .weibo-login, .login-out .qq-login, .login-out .weixin-login{
    display: inline-block;
    margin-right: 6px;
    width: 26px;
    height: 26px;
    background-image: url('../img/ia_100000128.png');
    background-position: 0 -50px!important;
    overflow: hidden;
}
.login-out .qq-login {
    background-position: -30px -50px !important
}

.login-out .qq-login:hover {
    background-position: -30px -80px !important
}

.login-out .weixin-login {
    background-position: 0 -165px !important
}

.login-out .weixin-login:hover {
    background-position: -30px -165px !important
}
.login-out .weibo-login:hover {
    background-position: 0 -80px !important
}
.login-out a{
    font-size: 14px;
    color:#ff9d00
}
.login-out .split {
    display: inline-flex;
    margin: 0 10px;
    width: 1px;
    height: 14px;
    background-color: #c9c9c9;
    overflow: hidden;
    align-self: center;
}

